St. Thomas Aquinas

The Summa Theologica

1. Of Man's Last End
2. Of Those Things in Which Man's Happiness Consists
3. What Is Happiness
4. Of Those Things That Are Required for Happiness
5. Of the Attainment of Happiness
6. Of the Voluntary and the Involuntary
7. Of the Circumstances of Human Acts
8. Of the Will, in Regard to What It Wills
9. Of That Which Moves the Will
10. Of the Manner in Which the Will Is Moved
11. Of Enjoyment, Which Is an Act of the Will
12. Of Intention
13. Of Choice, Which Is an Act of the Will with Regard to the Means
14. Of Counsel, Which Precedes Choice
15. Of Consent, Which Is an Act of the Will in Regard to the Means
16. Of Use, Which Is an Act of the Will in Regard to the Means
17. Of the Acts Commanded by the Will
18. Of the Good and Evil of Human Acts, in General
19. Of the Goodness and Malice of the Interior Act of the Will
20. Of Goodness and Malice in External Human Actions
21. Of the Consequences of Human Actions by Reason of Their Goodness and
Malice
22. Of the Subject of the Soul's Passions
23. How the Passions Differ from One Another
24. Of Good and Evil in the Passions of the Soul
25. Of the Order of the Passions to One Another
26. Of the Passions of the Soul in Particular: and First, of Love
27. Of the Cause of Love
28. Of the Effects of Love
29. Of Hatred
30. Of Concupiscence
31. Of Delight Considered in Itself
32. Of the Cause of Pleasure
33. Of the Effects of Pleasure
34. Of the Goodness and Malice of Pleasures
35. Of Pain or Sorrow, in Itself
36. Of the Causes of Sorrow or Pain
37. Of the Effects of Pain or Sorrow
38. Of the Remedies of Sorrow or Pain
39. Of the Goodness and Malice of Sorrow or Pain
40. Of the Irascible Passions, and First, of Hope and Despair
41. Of Fear, in Itself
42. Of the Object of Fear
43. Of the Cause of Fear
44. Of the Effects of Fear
45. Of Daring
46. Of Anger, in Itself
47. Of the Cause That Provokes Anger, and of the Remedies of Anger
48. Of the Effects of Anger

49. Of Habits in General, As to Their Substance
50. Of the Subject of Habits
51. Of the Cause of Habits, As to Their Formation
52. Of the Increase of Habits
53. How Habits Are Corrupted or Diminished
54. Of the Distinction of Habits
55. Of the Virtues, As to Their Essence
56. Of the Subject of Virtue
57. Of the Intellectual Virtues
58. Of the Difference between Moral and Intellectual Virtues
59. Of Moral Virtue in Relation to the Passions
60. How the Moral Virtues Differ from One Another
61. Of the Cardinal Virtues
62. Of the Theological Virtues
63. Of the Cause of Virtues
64. Of the Mean of Virtue
65. Of the Connection of Virtues
66. Of Equality among the Virtues
67. Of the Duration of Virtues after This Life
68. Of the Gifts
69. Of the Beatitudes
70. Of the Fruits of the Holy Ghost
71. Of Vice and Sin Considered in Themselves
72. Of the Distinction of Sins
73. Of the Comparison of One Sin with Another
74. Of the Subject of Sin
75. Of the Causes of Sin, if General
76. Of the Causes of Sin, in Particular
77. Of the Cause of Sin, on the Part of the Sensitive Appetite
78. Of That Cause of Sin Which Is Malice
79. Of the External Causes of Sin
80. Of the Cause Of Sin, As Regards the Devil
81. Of the Cause of Sin, on the Part of Man
82. Of Original Sin, As to Its Essence
83. Of the Subject of Original Sin
84. Of the Cause of Sin, in Respect of One Sin Being the Cause Of Another
85. Of the Effects of Sin, and, First, of the Corruption of the Good of
Nature
86. Of the Stain of Sin
87. Of the Debt of Punishment
88. Of Venial and Mortal Sin
89. Of Venial Sin in Itself

90. Of the Essence of Law
91. Of the Various Kinds of Law
92. Of the Effects of Law
93. Of the Eternal Law
94. Of the Natural Law
95. Of Human Law
96. Of the Power of Human Law
97. Of Change in Laws
98. Of the Old Law
99. Of the Precepts of the Old Law
100. Of the Moral Precepts of the Old Law
101. Of the Ceremonial Precepts in Themselves
102. Of the Causes of the Ceremonial Precepts
103. Of the Duration of the Ceremonial Precepts
104. Of the Judicial Precepts
105. Of the Reason for the Judicial Precepts
106. Of the Law of the Gospel, Called the New Law,
Considered in Itself
107. Of the New Law As Compared with the Old
108. Of Those Things That Are Contained in the New Law
109. Of the Necessity of Grace
110. Of the Grace of God As Regards Its Essence
111. Of the Division of Grace
112. Of the Cause of Grace
113. Of the Effects of Grace
114. Of Merit